speedometer/cable noise - help requested

So I just spent an hour on line looking for graphite cable lube: Dorman 03344, NAPA 765-1376, AMG's AMZ-03344, etc. There are listings galore but they all say Out of Stock - no indication of when it might be available. The only thing I could find was Motorcraft PTFE lubricant XG-8 grease which is specifically listed for speedometer cables. Any thoughts on this product?
If it's a liquid, I don't care what the label says, it's not a good product for speedo cables. ALL our local big box stores have graphite powder in stock AND dry aerosol lube like for motorcycle chains. This isn't that difficult. It is however gonna require you to get up and go to town.